This is a note to let you know that I've just added the patch titled

locking/refcounts, x86/asm: Enable CONFIG_ARCH_HAS_REFCOUNT

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: locking-refcounts-x86-asm-enable-config_arch_has_refcount.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Wed Dec 6 18:04:41 CET 2017

From: Kees Cook keescook@chromium.org Date: Sat, 2 Sep 2017 13:09:46 -0700 Subject: locking/refcounts, x86/asm: Enable CONFIG_ARCH_HAS_REFCOUNT

From: Kees Cook keescook@chromium.org

[ Upstream commit 39208aa7ecb7d9c4e86df782b5693270313cbab1 ]

With the section inlining bug fixed for the x86 refcount protection, we can turn the config back on.

Signed-off-by: Kees Cook keescook@chromium.org Cc: Ard Biesheuvel ard.biesheuvel@linaro.org Cc: Elena elena.reshetova@intel.com Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Mike Galbraith efault@gmx.de Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Gleixner tglx@linutronix.de Cc: linux-arch linux-arch@vger.kernel.org Link: http://lkml.kernel.org/r/1504382986-49301-3-git-send-email-keescook@chromium... Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -56,7 +56,7 @@ config X86 select ARCH_HAS_KCOV if X86_64 select ARCH_HAS_PMEM_API if X86_64 # Causing hangs/crashes, see the commit that added this change for details. - select ARCH_HAS_REFCOUNT if BROKEN + select ARCH_HAS_REFCOUNT select ARCH_HAS_UACCESS_FLUSHCACHE if X86_64 select ARCH_HAS_SET_MEMORY select ARCH_HAS_SG_CHAIN

Patches currently in stable-queue which might be from keescook@chromium.org are

queue-4.14/locking-refcounts-x86-asm-use-unique-.text-section-for-refcount-exceptions.patch queue-4.14/locking-refcounts-x86-asm-enable-config_arch_has_refcount.patch